Add gitlab-runner role

plays/gitlab.yml

@@ -2,4 +2,6 @@
 ---
 # Deploy Gitlab CI
 - hosts: gitlab-ci.adm.crans.org
-  roles: ["docker"]
+  roles:
+    - docker
+    - gitlab-runner

roles/gitlab-runner/tasks/main.yml

+---
+- name: Install apt-transport-https
+  apt:
+    update_cache: true
+    name:
+      - apt-transport-https
+      - ca-certificates
+      - curl
+      - gnupg2
+      - software-properties-common
+    state: present
+  register: apt_result
+  retries: 3
+  until: apt_result is succeeded
+
+# Add the key
+- name: Configure Gitlab apt key
+  apt_key:
+    url: https://packages.gitlab.com/runner/gitlab-runner/gpgkey
+    id: F6403F6544A38863DAA0B6E03F01618A51312F3F
+    state: present
+  register: apt_key_result
+  retries: 3
+  until: apt_key_result is succeeded
+
+# Add the repository into source list
+- name: Configure Gitlab repository
+  apt_repository:
+    repo: deb https://packages.gitlab.com/runner/gitlab-runner/debian/ buster main
+    state: present
+
+- name: Install gitlab-runner
+  apt:
+    update_cache: true
+    name: gitlab-runner
+    state: present
+  register: apt_result
+  retries: 3
+  until: apt_result is succeeded